Fix options merge, ensure latter options override
Fix options merge, ensure latter options override

thinsoldier/guzzle,kkopachev/guzzle,jeskew/guzzle,Tobion/guzzle,dshafik/guzzle,Tobion/guzzle,guzzle/guzzle,mrm/guzzle,EdgarPE/guzzle,chengky/guzzle,chengky/guzzle,staylor/guzzle,EdgarPE/guzzle,thinsoldier/guzzle,mustafavelioglu/guzzle,staylor/guzzle,paveljanda/guzzle,paveljanda/guzzle,wherefortravel/guzzle,ehough/guzzle,guzzle/guzzle,sulfo/guzzle,kkopachev/guzzle,sulfo/guzzle,michabbb-backup/guzzle,vrkansagara/guzzle,jeskew/guzzle,michabbb-backup/guzzle,mortenhauberg/guzzle,mikicaivosevic/guzzle,dshafik/guzzle,wherefortravel/guzzle,vrkansagara/guzzle,BostjanOb/guzzle,cenxun/guzzle,Brunty/guzzle,mortenhauberg/guzzle,cenxun/guzzle,mikicaivosevic/guzzle,ehough/guzzle,BostjanOb/guzzle,mustafavelioglu/guzzle,mrm/guzzle,Brunty/guzzle